ehh... i dunno. if you install a copy of windows with a copy of Linux already installed, it'll probably mess up your MBR and you won't be able to access RH without reinstalling another copy of Linux somewhere on your system.

i had this problem when i had WinXP, win2k and mandrake on my computer, then added another harddrive and put win2k on it... i couldn't access my mandrake or Winxp installs. i installed another copy of XP on the second hdd, and then i could access the other XP install, but i still can't get Mandrake. i've still gotta find a good ISO of RH 8.0